<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>在线聊天</title>
    <script src="https://unpkg.com/vue@2.7.14/dist/vue.min.js"></script>
    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
    <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css"></script>
    <script src="https://unpkg.com/element-ui/lib/index.js"></script>
</head>
<body>
<header class="p900 flexbtw">
    <h3>在线聊天、在线客服</h3>
    <div>
        欢迎 XXX
        <a href="#">退出</a>
    </div>
</header>
<main class="m900 flexbtw">
    <aside>
        <div v-for=" user in onlines">{{user}}</div>
    </aside>
    <article>
        <div id="msgs">
            <div v-for=" m in msgs " :class="{recv:m.author!=user , send:m.author==user}">
                <label class="user">{{m.author}}</label>
                <span class="msg">{{m.text}}</span>
            </div>
        </div>
        <textarea placeholder="Ctrl + Center 发送" id="msg" v-model="text"></textarea>
        <div id="ops">
            <input placeholder="用户名" v-model="user">
            <button @click="connect">连接</button>
            <button @click="send">发送</button>
        </div>
    </article>
</main>
<footer>源辰公司</footer>

<script>
    var v = new Vue({
        el :"main",
        data : {
            websocket : null,
            user : "",
            text : "",
            onlines : [],
            msgs : []
        },
        methods : {
            connect(){
                this.websocket = new WebSocket("ws://127.0.0.1/websocket/"+this.user);
                this.websocket.onmessage = (event)=>{
                    console.info(event.data);
                    let msg = JSON.parse(event.data);
                    this.msgs.push(msg);
                    if(msg.onlines && msg.onlines.length){
                        this.onlines = msg.onlines;
                    }
                    this.$forceUpdate();
                }
                this.websocket.onopen = ()=>{
                    console.info("链接成功");
                }
                this.websocket.onclose = ()=>{
                    console.info("断开成功");
                }
            },
            send(){
                this.websocket.send(this.text);
            }
        }
    })



</script>
</body>
</html>



















































<style>
    * {
        padding: 0px;
        margin: 0px;
        font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", sans-serif;
    }

    html,body{
        height: 100%;
    }
    body{
        display: flex;
        flex-direction: column;
    }

    a {
        text-decoration: none;
    }

    button{
        padding: 3px 10px;
    }

    .p900 {
        padding: 0px calc((100% - 900px) / 2);
    }

    .m900 {
        width: 900px;
        margin: 0px auto;
    }

    .flexbtw {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    header {
        background-color: #eee;
        flex: none;
    }
    header>h3{
        margin: 10px 0px;
    }

    main {
        flex: auto;
        background-color: #ddd;
    }

    footer {
        flex: none;
        padding: 5px;
        text-align: center;
        background-color: #eee;
    }

    aside {
        width: 200px;
        height: 100%;
        background-color: #ccc;
        flex: none;
    }

    article {
        height: 100%;
        flex: auto;
    }

    article {
        display: flex;
        flex-direction: column;
    }

    #msgs {
        flex: auto;
        box-sizing: border-box;
        padding: 10px;
    }

    #msg {
        flex: none;
        width: 100%;
        height: 100px;
        box-sizing: border-box;
    }

    .send > * {
        float: right;
    }

    .recv > * {
        float: left;
    }

    .send, .recv {
        clear: both;
        padding: 5px 0px;
    }

    .user, .msg {
        padding: 5px;
    }

    .msg {
        background-color: #e9e9e9;
        border-radius: 3px;
    }

    aside>div{
        text-align: center;
        padding: 10px;
        margin: 3px;
        background-color:#8c939d;
    }

    aside>div:hover{
        background-color:#8c939d55;
        cursor: pointer;
    }

    #ops{
        text-align: right;
        padding: 7px;
    }
    #ops>*{
        box-sizing: border-box;
        height: 25px;
        vertical-align: middle;
        margin: 0px 5px;
        text-align: center;
    }
    textarea{
        padding: 3px;
    }
</style>